package vfs.obj.entity;

/**
 * A VFSUser is a user of the virtual folder system.
 * 
 * @author Matthew Eavenson <durandal@uga.edu>
 */
public interface VFSUser extends VFSEntity{
        
    /**
     * Returns the external user id of this user.
     * The user id is meant to be a hook into
     * an external authentication module.
     * 
     * @return the external user id of this user
     */
    String getUserId();
    
}
